Hello,
First of all, you had a normal period so there are remote chances of
pregnancy and ectopic pregnancy. Light brown discharge, a week after period may be due to
hormonal imbalance, overuse of
contraceptive pills, Mental stress, Vigorous sex, infection or irritation of cervix,
pelvic inflammatory disease (PID), cysts in the ovaries or STD can cause this type of bleeding or discharge.
Second thing, the possibility of
implantation bleeding is extremely RARE in this case and it occurs 5 to 7 days prior to next due date in most cases.
Lastly, you have to wait for the next coming period and you can undergo home pregnancy test soon after the missed period. However, blood for a beta-hCG test can be done one week prior to the due date.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. AJEET SINGH, General & Family Physician